FoxFarm Bush Doctor Wholly Mackerel Fertilizer 3-1-0 | 16oz - Concentrate

Fish-Derived Nitrogen Nutrient, CDFA Registered, 16oz

Fast-growing plants in a heavy vegetative push sometimes need a nitrogen source that's ready to work immediately rather than one that has to break down first. FoxFarm Bush Doctor Wholly Mackerel 3-1-0 is a liquid plant nutrient derived from fish, delivering nutrition that's immediately available on application and carrying Registered CDFA Organic Input Material status for organic gardening programs.

The 16oz bottle fits home gardeners and smaller grows testing Wholly Mackerel as a fish-derived nitrogen source before moving to a larger size.

Key Features & Benefits

• 3-1-0 NPK Ratio — a nitrogen-forward liquid nutrient aimed at vigorous vegetative and early-stage growth.
• Fish-Derived Source — an organic-compatible nutrient source rather than a synthetic nitrogen salt.
• Immediately Available — nutrients are ready for uptake as soon as the product is applied, rather than requiring breakdown first.
• CDFA Registered — listed as a Registered CDFA Organic Input Material for organic gardening programs.

Who Should Use Wholly Mackerel 3-1-0

Cultivators who want a fish-derived, CDFA-registered organic nitrogen source for immediate delivery during vegetative and early growth stages are the intended user for Wholly Mackerel.

About FoxFarm Bush Doctor

Wholly Mackerel comes from FoxFarm's Bush Doctor line, produced by the Humboldt County, California, company that has manufactured soil and fertilizer products since the early 1980s, with a long-standing emphasis on organic-derived nutrient sources.

Frequently Asked Questions

What is the NPK ratio of Wholly Mackerel 3-1-0?

It carries a 3-1-0 ratio, which makes it a nitrogen-forward liquid nutrient rather than a balanced or bloom-leaning formula. That ratio is suited to vegetative and early growth stages.

Where does the nutrient in Wholly Mackerel come from?

It's derived from fish, which is why FoxFarm markets it under the Bush Doctor line alongside its other organic-derived supplements. That sourcing is also what supports its CDFA Organic Input Material registration.

Is Wholly Mackerel certified for organic use?

Yes, it's a Registered CDFA Organic Input Material, which means it's been reviewed against California's organic input standards. Growers running certified organic programs can use it without stepping outside those standards.

When in a grow cycle should I use Wholly Mackerel 3-1-0?

It's suited to vegetative and early growth stages, when a nitrogen-forward, immediately available nutrient source is most useful. Consult the FoxFarm feeding schedule for exact rates at each stage.